What is the difference between the first Passover and the second [Passover]?

The first [Passover] is subject to the prohibition that
“[Leaven] shall not be seen [with you]” (Exodus 13:7)
And “[leaven] shall not be found [in your houses]” (Exodus 12:19);

While at the second [Passover,
One may have both] leavened and unleavened bread in the house.

The first [Passover] requires [the reciting of] Hallel (Psalms 113–118) when [the Passover lamb] is eaten,
While the second [Passover] does not require [the reciting of] Hallel when it is eaten.

But both [first and second Passover] require [the reciting of] Hallel when they are offered,
And they [both] are eaten roasted with unleavened bread and bitter herbs,
And they [both] override the Sabbath.